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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Influence of technology of basic soil processing on chosen specifications in the process of growing flint maize (Zea mays L.)
 ŠIMEK, Roman
The diploma thesis is divided in two elementary parts. Current state and factors influencing soil fertility and its degradation are described in the literary part. An experiment, focused on comparison of two systems of starting the cover considering the period (spring, autumn) of realization of basic soil processing, is described in the practical part based on the methods. The influence of used technology of soil processing on its compaction was evaluated based on gauging the penetrometric resistance and on the evaluation of taken unimpaired soil samples. The values from the penetrometric gauging show that higher values were recorded at autumn dung ploughing in, compared to spring period. Higher values of the penetrometric resistance were gauged at headlands too. The difference in rail lines compaction compared to the field is dependent on the number of taken measures during the plant vegetation period and the measuring showed the compaction of lower soil layers. The values calculated from taken unimpaired soil samples show that the values of reduced mass per volume confirm the results of the penetrometric gauging. The values of maximum capillary water capacity characterize the soil at chosen stands as ?moisture-holding? and higher values were found out when using minimization technologies of soil processing. When comparing the period of soil processing, it was further established, that higher yield was when using the autumn dung ploughing and at the land with the autumn ploughing was also measured higher growth and weight of monitored corn, than at a land with work technologies done in the spring
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The comparison of different methods for soil physical properties determination
 Domin, Vojtěch ; Kumhála, František (advisor) ; Mašek, Jiří (referee)
This diploma thesis is focused on comparison of the methods which are used for soil physical properties measurement . A penetrometer and Kopecky rollers were used. To assess these methods, the soil properties were evaluated on the land of joint-stock company Sloveč near Městce Králové. The first part of this thesis consists of an introduction which describes the basic information related to this issue. The second part deals with literature review where the basic physical properties of soils are discussed, such as porosity and bulk density. The aim of this diploma thesis is mentioned in the third part. It is followed by the methodology in which the different methods of measurement are described. The next chapter focuses on the analysis of measured data and its evaluation. The next part deals with the technical-economic evaluation of measurement methods. The last part brings the conclusion which summarizes all the results of the thesis. The most interesting result of this diploma thesis that penetrometric measurement is affected by soil moisture content so significantly that it can show soil compaction entirely on other areas of the land than measurements using Kopecky rollers.
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